911 Targa (996) F6-3.6L (2004)
3. Unclip the blue cable -2- of the oxygen sensor in front of the catalytic converter from two wire retainers and the sheetmetal brackets on the engine
strut.
NOTE: Expose the oxygen sensor cable so that the cable can be unscrewed with the sensor when it is unscrewed.
4. Undo oxygen sensor using an open-ended wrench (wrench size 22) and screw it out by hand.
Right side of oxygen sensor:
1. Remove the air filter housing.